Demountable-rim contractor



A.'ANDE'RSON AND C. BROWN.

DEMOUNTABLEVRIM CONTRACTOR.

APPLICATION FILED Ammo, 1920.

1,385,353. Patented July 26, 1921.

2 SHEETS-SHEET l.

A. ANDERSON AND C. BROWN.

DEMOUNTABLE RIM CONTRACTUII.

APPLICATION FILED APR.I29, 1920.

`1,385,35 3. Patented my 26, 1921.

2SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

DEMOUNTABLE-RIM CONTRACTOR.

Specification of Letters Patent.

Patented July 2G, 1921.

Application filed April 29, 1920, Serial No. 877,591.

To all fui/mm it may concer/1t.'

Be it known that we, ANnnnw A vnnnsoiv and CIIAnLns BROWN, citizens of the 'United States, residing at Roel( Springs, in the county of Sweetwater, State ot ldlyoming, have invented a new and useful Demountable-Rim Contractor; and we do hereby de clare the following to be a tull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to demountable rim contractors and has tor its object to provide a device ot this character which may be easily and quit-,lily applied to the ad trent abutting ends of the rim and to the rim at a substantially diametrieally disposed point and provided with a lever, which lever when 'forced downwardly will contract the rim and assume a position past a vertical center where it will be held against upward movement.

A. further object is to provide a rim contractor which may be so folded as to occupy an extremely small space. A further object is to provide a rim contractor comprising a lever having spaced arms, said lever having pivotally connected to one ot its ends a rim engaging arm and also pivoted to its sides at a point spaced from its pivotal end upwardly and outwardly extending hooks adapted to engage the demountable rim adjacent the split therein. Also to provide elongated slots in which the pivotal pins of the upwardly and outwardly extending hooks are disposed so that the hooks may be disposed in such a way that they will engage the sides of the operating lever when it is desired to fold the tool into a compact form.

With the above and other objects in view the invention resides in the combination and arrangement of parts as hereinafter set forth, shown in the drawings, described and claimed, it being understood that changes in the precise embodiment of the invention may be made within the scope of what is claimed without departing from the spirit of the in vention.

In the drawings Figure l is a Side elevation of a conventional form of cle-mountable rim and tire showing the contractor applied thereto.

Fig. 2 is a plan view of the contractor showing the same in folded condition.

Fig. 3 is a detail sectional view through the contractor showing the pivotal points between the parts.

Fig. 4t is a perspef-tive view ol1 the contractor.

Fig. is a side elevation ot tho operating lever showing the positions assumed by the parts adjacent the pivotal points.

Fig. 6 is a perspective view ot one ot the spring members 'lor trictionally holding the diverging rim engaging arms.

Referring to the drawings, the numeral l designates a convi-mtional 'torni et automebile tire and 2 a demonntable rim disposed therein. The demountable rim. is olf what known. as tbe split rim type, in which type it is necessary to 'force out 'ot engagement the abutting ends 3 and also the interlocking member fl. To accomplish the above resillt the rim. contractor 5 is provided, which rim contractor comprises a member G, the upper end of which is bingedly connected as at i' to the ends et and between arms 8 ot an operating lever 9. The lower end ot the member G is provided with a hook 10 adapted to engage the flange of the demountable rim 2. The lower end of the operating lever 9 is provided with ahandle member 1l. adapted to be grasped by the hand of an operator during a rim contracting operation. Pivoted to the spaced arms 8 oit the operating lever 9 at a point spaced from the pivotal point 7 are upwardly and outwardly extending members l2, the upper ends ot which are provided with hooks 13 adapted to engage the flange of' the demountable rim 2, in such a manner that one hook will be disposed ou each side of the split of the rim. The pivotal points lll are formed by pins l5 which are carried by the arms S and which pins extend outwardly therefrom through elongated slots` 1G in the portions 17 of the arms l2. It will be seen that during a rim contracting operation, that as the operating lever 9 is moved downwardly that the diverging arms 12 will be moved outwardly and downwardly on the pivotal. points 14. By providing a space between the arms 8, it will be seen that when the. operating lever 9 is in its eXtreme down position that the member 6 will be received in the space between the spaced arms 8 thereby allowing the pivotal points 14 to pass beyond a vertical center line drawn through the pivotal point 7. The lower end oi the lever- 9 being in engagement with the side of the rim, it will be seen that the inward movement of the operating` lever 9 is limited and that the rim will be held in contracted position7 thereby allowing;l it to be easily removed from the tire.

The pins 15 extend outwardly and are provided with heads 1S, between which heads and the outer faces of the lower ends of the upwardly and outwardly extending arms 12, springs 19 are interposed. Springs 19 normally hold while the Contractor is in use the parts in the position shown in Fig. 4. However, when the contractor is in collapsed or folded position as shown in 'Fig'. 2 the arms 12 are torced downwardly until the pins 15 are disposed in the upper ends of slots 1G. By soi positioning' the pins 15, it will be seen that the arms 12 may be disposed in engagement with the outer sides of the spaced arms 8. thereby allowing the Contra'tor to be folded into a eompaet space. It will also be seen that th'e springs 19 will hold said arms 12 in said position.

Frein the above it will be seen that a rim contractor is provided which is extremely simple in construction, positive in its operation, and one wherein the pivotal points are so positioned that when the rim is in contracted position the operating lever will be prevented from being' forced upwardly by the spring` action et the rim and consequent expansion of the split rim.

The invention having; been set torth what is claimed as new and uselul is:-

A rim Contractor comprising an operating` lever having' spaced arms, a rim engaging arm having` one of its ends pivoted to the end ot the operating' lever and disposed between the arms thereof, arms pivoted on pins extending outwardly from the sides ot the arms ot the operating` lever, said pivoted arms being bent at their pivoted ends and having elongate slots in the bends thereof' for the reception of the outwardly extend-- ing' pins, said pins being' provided with heads spaced from the pivoted arms. springs interposed between the heads ol the pins and the outer faces ot the pivoted arms` said slots and springs beineY so placed and related that the arms will be held spread when the pins are at the inner ends ot the slots and allowed to rest against the handle. when the pins are at the outer ends ot thev slots.

ln testimony whereot we have signed our names to this specification in the presenf'e ol' two subscribingl witnesses.

ANDREN ANDERSON. CHARLES BROWN,

lVitnesses Rom?. D. MURPHY, A. L. MCCURTAIN. 

